The three symptoms of schizophrenia are:
Disorganized thinking and speech
Definitions of each type are included below:
Delusions are inaccurate beliefs that are not based on reality. For example, it is common for persons with schizophrenia to think they are being harassed or harmed, and certain gestures or comments are typically directed to them. They may also think someone is in love with them or a major catastrophe is about to happen.
Hallucinations involve seeing or hearing things that don't exist. Hallucinations for people with schizophrenia are a real experience that has full force and impact on their lives.
Disorganized thinking is typically inferred from incoherent speech and is often characterized by impaired communication. It is common for persons with schizophrenia to provide answers that are completely or unrelated to questions asked.